The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 1985
Filed:
Oct. 03, 1983
Jean Bachot, Fontenay aux Roses, FR;
Jean-Pierre Quentin, Lyons, FR;
Jean-Luc Bourgeois, Tassin la Demi Lune, FR;
Chloe Chimie, Paris, FR;
Abstract
A process for preparing membranes for electrolysis. One such process comprises impregnating a porous sheet comprising a polyfluoroolefin, asbestos fibers and an inorganic pore-forming agent with a solution comprising (i) a compound selected from the group consisting of acrylic acid and methacrylic and (ii) at least one other non-ionic monomer having at least one >C.dbd.CH.sub.2 group, withdrawing said sheet from contact with said solution, polymerizing the monomers which become impregnated in the sheet so that the pores of the sheet contain the resulting acrylic polymer, eliminating the inorganic pore-forming agent to form pores in the sheet, and swelling the acrylic polymer so that the pores of the sheet are closed by the polymer. The membranes produced by these processes are useful in cells for the electrolysis of sodium chloride to produce chlorine and sodium hydroxide.